The FLA team began the inspections Monday morning at Foxconn City in Shenzhen, China, Apple said. The complex employs and houses hundreds of thousands of workers.

Foxconn, a unit of Taiwan’s Hon Hai Precision Industry Co. employs an estimated 1 million to 1.1 million people in China at a series of huge factory campuses. Working conditions at the factories have been a focus of criticism.

A New York Times story published Jan. 26 reported on accidents and long hours in Foxconn factories, based on workers’ accounts. Foxconn disputed allegations of back-to-back shifts and crowded living conditions.

Cupertino, Calif.-based Apple has been conducting its own audits of working conditions at factories where its gadgets are assembled since 2006. A month ago, it took the additional step of joining Washington-based FLA,